Improved machine for kyanizing wood



ittica-fi 5mm @met @Mitica DAVID W. HUNT, OF SAN FRANCISCO, CALIFORNIA.

Letters Patent No. 91,848, dated J une 29, 1869; antedated June 22, 1869.

IMPROVED MACHINE FOR KYANVIZING- WOOD.

The Schedule referred to in these Letters Patent and making part of the same.

The vnature'ot my invention is to provide an im 4 4proved machine for retaining the wood in 'position while the substances or solution is being forced into it.

-To do this I employ-a bed-plate ot iron, provided with suitable bolts for permanently anchoring it.

A square dish is made in the face of `the plate, surrounded with a flange whose inner edges are bevelled.

An .upper plate is placed above the lower plate, which is supported by three posts.

- .Passing through the top plate is aV screw or camlever, having attached to it a corrugated cap.

The wood to he saturated is placed upon the flange on the bottom plate, and the screw, turned down until the sharp edges of the Harige, pressing into it, make it water-tight, and hold the stick rmly between the lower plate and cap, while the solution is forced in at the bottom of the lower or bed-plate.

In order to moreV fully illustrate and describe my invention, reference is had to the accompanying drawings, of which- Figure 1 is a view of the frame with the block inplace.

Figure 2 is a side sectional elevation.

A is the base or lower plate, constructed of iron, which may be provided with suitable holes or openings for anchoring the machine.

At one end of the bed-plate is a square dish, B, formed by a flange, "a a, whose inner side is bevelled, so that a sharp edge is presented.

In the cent-re ot' the dish a hole or opening, C, is made, completely through the plate.

'Ihree iron posts, D D D, are screwed into the bedplate, outside of the dish, which supports a plate, lil,

upon the other end of the stick.

The wood to be treated is' placed. upon end on the sharp-edged projection or ange on the bed-plate, and the screw turned down upon it until ,a water-tight joint is had around the lower end ofthe block.

In the hole through the pedestal or bed-plate, a pipe is introduced, which is connected to aforce-pump provided with a stop-cock, and charged with the necessary solution, or filled with duid, such as oil, petroleum, arsenic, sulphate of zinc, carbolic acid, salt-pickle, creosote, or any other preserving-substance which drives the sap in the wood up to the top of the block,

and into the grooves c c, where it passes off by means of transverse slots, and opens the pores, while the solution is forced up into the timber.

By an ordinary pressure, the solution will be forced into the end of the block or stick of timber about four feet,which will be suflicient for posts that are to be set in the ground; but by a greater forcing-power, the distance may be increased to a great length.

For preserving that portion of the ends of long timbers used in building brick structures, that are placed in the wall, a cap may be secured, by clamps, to the end of the stick, and the iuid forced into the wood three or four feet, or a suflicient distance to preserve it from the damp of the wall.

With two hundred of myimachines, which can be constructed at a small cost, setin rows, and connected to one pump, twelve hundred blocks of wood may be treated in one hour, allowing each piece to remain in the frame ten minutes. For treating long timbers, the machine will be made ofthe desired length.

Having thus described myinvention,

What I claim, and desire to secure by Letters Patent, is-

1. The base or bed-plate A, with the dish or depression B, tlange a a, and the hole or opening, C, in the bottom of thebed-plate, for forcing the substance into the wood, substantially as described. I

2. The upper plate' E, screw F, corrugated and grooved cup C, for pressing the timber down upon the flange, and allowing the-air and sap to escape as it is forced upward, substantiallyas described.

In witness whereof, I have hereunto set my hand and seal.

DAVID W. HUNT. [11. s]

W'itnesses:

J. L. Boonn, Guo. H. STRONG. 

